It is then necessary to integrate the lines of the reinforcement ring into the quadrangle surface of the chimney. Otherwise, the elements are not connected to each other.
How can I quickly model a chimney with reinforcement rings and stiffeners?
How can I quickly model a chimney with reinforcement rings and stiffeners?
Answer:
In RFEM, the easiest way is to use the "Plane Surfaces" → "Annulus" function. This allows you to model the reinforcement rings very quickly and easily. Then, you can extrude the inner line into a surface; the chimney is already generated. Now, the existing annular surface is copied upwards and the corresponding stiffeners are modeled. You can use the "Rotate" command to distribute the stiffeners over the chimney perimeter.Do you have any questions?
![Variants of Display of Result Values](/en/webimage/010258/3042968/01-en.png?mw=512&hash=65e98cfe859ce35a3e3e9da47a0ef9335401520e)
You can make various settings in order to achieve a clearly‑arranged display of the result values. For example, some users may not want the white background in text bubbles. You can adjust the background in "Display Properties" using the Transparent and Background color option.
![Factor for Taking into Account Unloading of Soil Pressure](/en/webimage/010343/3017742/01-en.png?mw=512&hash=65e98cfe859ce35a3e3e9da47a0ef9335401520e)
In RF-/FOUNDATION Pro, the user can freely select the proportion of the relieving soil pressure by means of the factor kred.
![Displaying Result Values](/en/webimage/010423/2985401/01-en.png?mw=512&hash=65e98cfe859ce35a3e3e9da47a0ef9335401520e)
For relatively large or relatively small surfaces, it can happen that the automatically created result values do not fit the model: In the case of large surfaces, there can be too many result values; in the case of small surfaces, too few.
![Saving and Importing Diagrams for Member Hinges](/en/webimage/010427/2984202/01-EN.png?mw=512&hash=17127434c06258f349409b3e8f047f6d0e8c4ea7)
In RFEM 5 and RSTAB 8, it is possible to assign nonlinearities to member hinges. In addition to the nonlinearities "Fixed if" and "Partial activity", you can select "Diagram". If you select the "Diagram" option, you have to specify the according settings for the activity of the member hinge. For the individual definition points, it is necessary to specify the abscissa and ordinate values (deformations or rotations and the according internal forces) that define the hinge.
![Feature 002820 | Limit Plastic Strain for Welds](/en/webimage/050344/3881226/1.png?mw=512&hash=9d7f6c198b6d4ae6ee8f2fa8bca75f85579e14c9)
In the ultimate configuration of the steel joint design, you have the option to modify the limit plastic strain for welds.
![Component "Base Plate"](/en/webimage/050345/3936120/50345.png?mw=512&hash=3bd641cb1a2445804b338855e4debfc40c6563e9)
The "Base Plate" component allows you to design base plate connections with cast-in anchors. In this case, plates, welds, anchorages, and steel-concrete interaction are analyzed.
![Feature 002807 | 3D Display of FSM Results](/en/webimage/049281/3861162/2024-05-01_10-32-55.png?mw=512&hash=2377d291bc20ac3d78d617b50c131614e99ac6f7)
In the "Edit Section" dialog box, you can display the buckling shapes of the Finite Strip Method (FSM) as a 3D graphic.
![Steel Design | Seismic Force-Resisting System Design Overview](/en/webimage/048507/3803346/seismic_steel.png?mw=512&hash=1c18a83f050e74601a7300444a0d77a0246a0e02)
- Design of five types of seismic force-resisting systems (SFRS) includes Special Moment Frame (SMF), Intermediate Moment Frame (IMF), Ordinary Moment Frame (OMF), Ordinary Concentrically Braced Frame (OCBF), and Special Concentrically Braced Frame (SCBF)
- Ductility check of the width-to thickness ratios for webs and flanges
- Calculation of the required strength and stiffness for stability bracing of beams
- Calculation of the maximum spacing for stability bracing of beams
- Calculation of the required strength at hinge locations for stability bracing of beams
- Calculation of the column required strength with the option to neglect all bending moments, shear, and torsion for overstrength limit state
- Design check of column and brace slenderness ratios
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